Base Station Antenna With Orthogonal Oscillators
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Solution Overview
Problem
The existing base station antennas have complex feeding manners, which hinder miniaturization and are not suitable for the high-speed, low-latency requirements of 5G technology.
Innovation Solution
A base station antenna design featuring two antenna sub-arrays with orthogonal oscillator units, utilizing power dividers and microstrip lines for signal distribution, allowing for a simplified feeding mechanism and achieving orthogonal polarization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a complex feeding manner is used in existing base station antennas, then the antenna can achieve certain radiation performance, but the antenna size cannot be miniaturized
Solution Approach 1:
The patent merges the feeding functions for multiple antenna oscillators into a single integrated power divider structure. The power divider simultaneously feeds multiple antenna oscillators with orthogonal polarizations, eliminating the need for separate feeding networks and reducing overall antenna complexity while enabling miniaturization
Solution Approach 2:
The power divider structure serves multiple functions: it divides power signals, provides impedance matching, and feeds multiple antenna oscillators with different polarizations. This multi-functional design reduces the number of separate components needed, thereby reducing antenna size while maintaining performance
2Adaptability or versatility
If multiple antenna oscillators with orthogonal polarizations are used to achieve 4T4R mode, then the antenna performance meets 5G requirements, but the feeding structure becomes more complex
Solution Approach 1:
The patent segments the antenna system into multiple independent oscillators with orthogonal polarizations, each fed by a shared power divider. This segmentation allows each oscillator to be optimized independently while the power divider provides unified feeding, achieving 4T4R capability without proportional increase in feeding complexity
Solution Approach 2:
The patent utilizes orthogonal polarizations (different spatial dimensions) to create multiple antenna oscillators that can be fed through a shared power divider structure. By exploiting the polarization dimension, the system achieves 4T4R capability without requiring four separate feeding networks, thus reducing overall structural complexity
Data Source
AI summary
A base station antenna is provided, including at least two antenna sub-arrays. Each antenna sub-array includes a circuit board and two antenna oscillators. The circuit board includes a circuit substrate, and a first and second power divider disposed on a surface of the circuit substrate. The first and second power divider include a first, second and third end. Each antenna oscillator includes two pairs of first and second oscillator units of which polarizations are orthogonal. The second and third end of the first power divider are respectively electrically connected to the first oscillator unit of a first and second antenna oscillator. The second and third end of the second power divider is respectively electrically connected to the second oscillator unit of the first and second antenna oscillator. Two antenna oscillators form a 4T4R transceiving mode. The base station antenna of the present disclosure has the advantage of simple feeding mode.